org.jowidgets.util.context

Interface IContextSingletonProvider

public interface IContextSingletonProvider

A context singleton holds exactly one value for a defined context. A context singleton provider holds all context singletons an can be used to access them

Method Summary

Methods

Modifier and Type	Method and Description
<VALUE_TYPE,CONTEXT_TYPE> VALUE_TYPE	get(CONTEXT_TYPE context, IContextSingletonFactory<VALUE_TYPE,CONTEXT_TYPE> factory) Gets a value for a defined context.
void	removeReference(java.lang.Object context) Removes the reference from the provider if one exists.

Method Detail

get

<VALUE_TYPE,CONTEXT_TYPE> VALUE_TYPE get(CONTEXT_TYPE context,
                                       IContextSingletonFactory<VALUE_TYPE,CONTEXT_TYPE> factory)

Gets a value for a defined context. If not yet exists, it will be created by the given factory

Parameters:

context - The context to get the singleton for (must not be null)

factory - The factory to create the context with if not exists (must not be null)

Returns:

The value for the context

removeReference

void removeReference(java.lang.Object context)

Removes the reference from the provider if one exists. REMARK: If get will be invoked after invoking this method, a new instance will created for the context

Parameters:

context - The context to remove the reference for